James m



(N0 Model.)

J. M. BASINGER.

CLAMP.

No. 359,838. Patented Mar. 22, 1887.

W ZneJJar j i g Unwrap STATES rena HTEQEO JAMES M. BASINGER, OF BUFFALO, NEW YORK, ASSIGNOR OF ONEFOUBTH TO "WILLIAM L. XVHITE, OF SAME- PLACE.

CLAMP.

SPECIFICATION forming part of Letters Patent No. 359,833, dated March 22, 1887.

Application filed August 7, 1886. Serial No. 310,313. (No model.)

To aZZ whom it may concern.-

Be it known that I, Janus M. BASINGER, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Clamps, of which the following is a specification.

This invention relates to an improvement in that class of clamps which are employed for clamping articles while being operated upon,

and for holding together glued articles, and

for other similar purposes.

7 The object of my invention is to provide the clamp with means whereby the clamping-screw can be quickly and readily adjusted to hold the work; and the invention consists of the improvements which will be hereinafter fully set forth, and pointed out inthe claim.

In the accompanying drawings, Figurel represents aside elevation of myiinproved clamp.

Fig. 2 is a longitudinal section of the same. Fig. 3 is a crosssect-ion in line 00 00, Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents the frame or yoke of the clamp,

2 3 which is coustructedin awell-known manner, and provided at one end with a stationary j aw, c.

13 represents an enlargement formed at the opposite end of the frame A,-and provided with an eye or openin I), in which is arranged a sliding sleeve or tube, 0. The enlargement B is provided on its upper side with a screwthreaded opening, which extends into the eye I), and in which engages a set-screw, b. The 5 latter is adapted to enter one of a series of notches or recesses, 0, formed in the sleeve 0,

nal screw-thread formed at the inner end of the sleeve 0, so that the screw D can be adj usted in the sleeve 0 by turning the screw. The screw D is provided at its inner end with a clamping-jaw, E, which is connected to the screw by means of a ball-and-socket joint, so that the jaw E can adjust itself to the surface of the article to be clamped.

F represents a hand-wheel or thumb-piece secured to the outer end of the screw D,where- 5 5 by the screw is readily turned.

When it is desired to clamp a board or other article, the same is placed against the stationary jaw a, and the set-screw b is released from the sleeve 0. The sleeve Gis then moved toward the article until the jaw E comes in contact therewith, and the set-screw b is tightened, whereby the sleeve 0 is firmly held in the eye b; The screw D is then turned in the proper direction to force the jaw E against the article, whereby the same is tightly clamped. The sleeve G and screw D are screwthreaded only a small portion of their length, as the clamping-screw D requires but a small range of movement, the greater part of its adjustmentbeing effected by the sliding sleeve G.

. The sleeve or tube C is provided with a grad uated scale, as shown in Fig. 1, so that when the clamp is used in connection with a number of articles of the same dimensions, or a large quantity of material of the same thickness, the jaw E can be adjusted by means of the sliding sleeve 0 to a predetermined distance from the stationary jaw a corresponding with the size of the article to be clamped. In this case it is only necessary to place the article between the jaws a' and and then turn the screw D to clamp the article. The scale on the sleeve 0 is preferably so arranged that when one of the division-lines between the graduations is brought in line with the outer edge, 9, of the enlargement B the distance between the two jaws will be designated by the character or figure of the scale adjacent to the edge g. In the instance represented in the drawings the scale indicates that the distance between the jaws is three-quarters of an inch.

By my improved device the clamping-screw can be rapidly adjusted to hold articles of various sizes with very little rotary movementof the clamping-screw, thereby effecting a saving of time and labor.

I claim as my invention-- The combination, with the frame A, provided at one end with a stationary jaw, a, and

at the other end with an eye, b, of a sleeve, 0, arranged loosely, in the eye I), and provided with an internal screw-thread, a set-screw, b, seated in the eye b and bearing against the sleeve 0, a clampingscrew, D, provided with an external screw-thread, d, which engages in the internal screw-thread 0f the sleeve 0; and a clamping-jaw, E, attached to the inner end of the screw D, and a thumb-piece, F, secured a to the outer end of the sleeve D, substantially 10 as set forth.

Witness my hand this 26th dayof J nly 1886.

. JAMES M. BASINGER. Vitnesses:

J NO. J. BONNER, CARL F. GEYER. 

